trifling（n.） "act or conduct of one who trifles, frivolous practice," late 14c., verbal noun from trifle (v.).该词起源时间：14世纪末 trifling（adj.） c. 1400, "cheating, feigning;" 1530s, "lacking depth or earnestness;" present-participle adjective from trifle (v.). In U.S. Southern colloquial, "good-for-nothing, worthless, low, mean." Triflous (c. 1500) also formerly was used.该词起源时间：约1400年
